Problem with IE 7 pop up window (security level medium and above)

hi all , I am having a problem with IE 7 . When ever I try to open a pop up ,in IE 7 ,with security level medium or above , all the URL gets attached to the title bar of the page. This URL gets attached to the title bar of the page ONLY with the security level medium and above. Is there any way ,I can avoid this long URL on the title bar of the pop up WITHOUT CHANGING THE BROWSER SETTINGS Any link , any white paper will be appriciated. Thanks and regards Samir